DrivingTest.ca is an online driving test practice site that serves all provinces and territories in Canada. Advance through the practice tests at your own pace on any computer, tablet or mobile phone with internet access. While these tests are not the same as the actual ones you will be taking, they can give you a good idea of what to expect. It is all FREE!

QC Commercial Driver Licence - Quiz 3

Which of the following is not one of the factors determining the braking power?
a.
b.
c.
d.

Question 1 of 30

If you are carrying a heavy load, why is it important to increase your stopping distance rather than increasing your braking power when bringing the vehicle to a stop?
a.
b.
c.
d.

Question 2 of 30

The emergency brake will take over and bring the vehicle to a stop when the pressure in the service brakes drops below:
a.
b.
c.
d.

Question 3 of 30

What is an essential guideline to follow when negotiating a curve?
a.
b.
c.
d.

Question 4 of 30

What mechanism causes the vehicle to slow down in a drum brake system when the driver presses the brake pedal?
a.
b.
c.
d.

Question 5 of 30

What happens when the parking brake knob is pushed in?
a.
b.
c.
d.

Question 6 of 30

As a responsible driver, you should look ahead over the distance you will be covering in the next:
a.
b.
c.
d.

Question 7 of 30

What does the acronym GVWR stand for?
a.
b.
c.
d.

Question 8 of 30

How often should you be checking your rearview mirrors?
a.
b.
c.
d.

Question 9 of 30

If you doing a brake adjustment inspection, what is the sign that your brake(s) needs to be adjusted?
a.
b.
c.
d.

Question 10 of 30

What would two needles in an air pressure gauge indicate?
a.
b.
c.
d.

Question 11 of 30

What is the purpose of an air purifier in an air brake system?
a.
b.
c.
d.

Question 12 of 30

Air brake systems might operate at different pressure levels, but the difference in pressure between when the air compressor starts and stops operating is always the same. It is:
a.
b.
c.
d.

Question 13 of 30

Why is it important for drivers to know about brake lag?
a.
b.
c.
d.

Question 14 of 30

Retarders will:
a.
b.
c.
d.

Question 15 of 30

How is compressed air supplied to a semitrailer's reservoirs?
a.
b.
c.
d.

Question 16 of 30

If you are making a turn in a heavy vehicle, when is the correct time to accelerate?
a.
b.
c.
d.

Question 17 of 30

What is the correct way to ensure you are following the vehicle in front at a safe distance:
a.
b.
c.
d.

Question 18 of 30

If an air compressor begins operating when the air pressure in the service reservoirs drops below 714 kPa, then the air compressor will stop filling them when the pressure reaches:
a.
b.
c.
d.

Question 19 of 30

Which of the following statements is true about the primary and secondary circuits of an air brake system?
a.
b.
c.
d.

Question 20 of 30

When is jackknifing most likely to occur?
a.
b.
c.
d.

Question 21 of 30

When the brake pedal has been applied, what happens immediately after compressed air pushes on the diaphragm of the brake chamber?
a.
b.
c.
d.

Question 22 of 30

When entering a right curve in a heavy vehicle, the driver should:
a.
b.
c.
d.

Question 23 of 30

Which of the following is not an appropriate use for the trailer hand brake?
a.
b.
c.
d.

Question 24 of 30

Which of the sequences below correctly describes how air from the outside of the vehicle travels through the brake system?
a.
b.
c.
d.

Question 25 of 30

What does the air pressure gauge tell you?
a.
b.
c.
d.

Question 26 of 30

If the low pressure light comes on, indicating that your service brake system is failing, what should you do?
a.
b.
c.
d.

Question 27 of 30

Which is not a major factor contributing to 'brake fading'?
a.
b.
c.
d.

Question 28 of 30

Which of the following situations could prevent you from clearing an overpass even if your vehicle is shorter than the height indicated?
a.
b.
c.
d.

Question 29 of 30

What is best practice for using your supplemental brakes when going down a hill with a loaded vehicle?
a.
b.
c.
d.

Question 30 of 30


 

It is recommended that you take a practice test before you take the actual written test. Please note, however, that this is not the actual test, and you will not receive your license if you pass this sample practice test. If you’re getting your commercial licence, you've come to the right place.


To begin your career in commercial driving you must obtain your Quebec Class 1, Class 2, Class 3 or Class 4 Heavy Vehicle Driver Licence.
This online practice tests was developed to help individuals studying for their Heavy Vehicle driver’s licence. Our practice testing area is designed to help you learn the information that will be covered on your actual written knowledge test and to give you the opportunity to become familiar with the testing format. All testing material is covered in official Quebec’s ‘Driving a Heavy Vehicle‘ manual.